Added mute, hold and typing detect to voe_cmd_test to increase functionality in the voe_cmd_test application.
Added mute, hold and typing detect to voe_cmd_test to increase functionality in the voe_cmd_test application.

Typing Detect is applicable only for Mac.  
Review URL: http://webrtc-codereview.appspot.com/156002

git-svn-id: 9b397c5dfe384c04b1b200d5305b653241000171@632 4adac7df-926f-26a2-2b94-8c16560cd09d

lukeweber/webrtc-src-override,lukeweber/webrtc-src-override,lukeweber/webrtc-src-override,lukeweber/webrtc-src-override,lukeweber/webrtc-src-override,lukeweber/webrtc-src-override,lukeweber/webrtc-src-override